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Finding the Fourth Proportional to 239.47, 332.69 and 236.59

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Solution

The fourth proportional to 239.47, 332.69 and 236.59 is: 328.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.47 : 332.69 = 236.59 : x
  2. Step 2: Convert to fraction form
    239.47/332.69 = 236.59/x
  3. Step 3: Cross multiply
    239.47x = 332.69 × 236.59
  4. Step 4: Simplify right side
    239.47x = 78,709.46
  5. Step 5: Solve for x
    x = 78,709.46/239.47
  6. Step 6: Final answer
    x = 328.69

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.